diff --git a/tests/tools/test_daemon_pool.py b/tests/tools/test_daemon_pool.py
index 0bab785095..66064bcaad 100644
--- a/tests/tools/test_daemon_pool.py
+++ b/tests/tools/test_daemon_pool.py
@@ -94,26 +94,63 @@ def test_submit_propagates_caller_contextvars():
         pool.shutdown(wait=True)
 
 
-def test_workers_support_worker_context_without_legacy_initializer_attrs(monkeypatch):
-    """Python 3.14 creates a worker context instead of storing initializer fields."""
-    seen_contexts = []
+def _capture_worker_args(monkeypatch, pool):
+    """Swap the stdlib worker for one that records its args and resolves one item.
 
-    def worker_with_context(_executor_ref, worker_context, work_queue):
-        seen_contexts.append(worker_context)
-        work_queue.get().run()
+    The stdlib ``_worker`` signature differs between interpreters, so the fake
+    accepts anything and completes the work item's future directly — the test
+    then runs on 3.11 and 3.14 alike and asserts only on the arg shape chosen.
+    """
+    seen = []
 
+    def fake_worker(*args):
+        seen.append(args)
+        pool._work_queue.get().future.set_result("done")
+
+    monkeypatch.setattr(daemon_pool, "_worker", fake_worker)
+    return seen
+
+
+def test_worker_gets_context_when_executor_builds_worker_contexts(monkeypatch):
+    """3.14+ shape (#58596, #111813): the executor exposes ``_create_worker_context``
+    and no ``_initializer``/``_initargs``; the worker must receive
+    ``(executor_ref, ctx, work_queue)`` — reading the legacy fields raised
+    ``AttributeError`` on every pool spawn."""
     pool = DaemonThreadPoolExecutor(max_workers=1)
-    monkeypatch.setattr(daemon_pool, "_worker", worker_with_context)
-    monkeypatch.setattr(
-        pool, "_create_worker_context", lambda: "worker-context", raising=False
-    )
-    del pool._initializer
-    del pool._initargs
+    monkeypatch.setattr(pool, "_create_worker_context", lambda: "worker-context", raising=False)
+    monkeypatch.delattr(pool, "_initializer", raising=False)
+    monkeypatch.delattr(pool, "_initargs", raising=False)
+    seen = _capture_worker_args(monkeypatch, pool)
     try:
-        assert pool.submit(lambda: "done").result(timeout=10) == "done"
-        assert seen_contexts == ["worker-context"]
+        assert pool.submit(lambda: None).result(timeout=10) == "done"
     finally:
         pool.shutdown(wait=True)
+    ((executor_ref, ctx, work_queue),) = seen
+    assert executor_ref() is pool
+    assert ctx == "worker-context"
+    assert work_queue is pool._work_queue
+
+
+def test_worker_gets_initializer_when_executor_stores_initializer_fields(monkeypatch):
+    """3.11–3.13 shape: no ``_create_worker_context``; the worker must receive
+    ``(executor_ref, work_queue, initializer, initargs)``."""
+
+    def init(*_):
+        return None
+
+    pool = DaemonThreadPoolExecutor(max_workers=1)
+    monkeypatch.delattr(pool, "_create_worker_context", raising=False)
+    monkeypatch.setattr(pool, "_initializer", init, raising=False)
+    monkeypatch.setattr(pool, "_initargs", (1, 2), raising=False)
+    seen = _capture_worker_args(monkeypatch, pool)
+    try:
+        assert pool.submit(lambda: None).result(timeout=10) == "done"
+    finally:
+        pool.shutdown(wait=True)
+    ((executor_ref, work_queue, initializer, initargs),) = seen
+    assert executor_ref() is pool
+    assert work_queue is pool._work_queue
+    assert (initializer, initargs) == (init, (1, 2))
 
 
 def _repo_root():